Reduce amount of education, we hear (6)
I believe the answer is:
lessen
'reduce amount' is the definition.
'lessen' can be an answer for 'reduce' (I've seen this before). I'm not sure about the 'amount' bit.
'education we hear' is the wordplay.
'education' becomes 'lesson' (lesson is a kind of education).
'we hear' indicates a 'sounds like' (homophone) clue.
'lesson' is a homophone of 'LESSEN'.
'of' is the link.
Can you help me to learn more?
(Other definitions for lessen that I've seen before include "Decrease, diminish" , "Cut back or diminish" , "Lower" , "Contract" , "Become smaller or fewer" .)